lib/libc/rpc/getrpcport.c

   1 /*      $NetBSD: getrpcport.c,v 1.16 2000/01/22 22:19:18 mycroft Exp $  */
   2
   3 /*
   4  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   5  * unrestricted use provided that this legend is included on all tape
   6  * media and as a part of the software program in whole or part.  Users
   7  * may copy or modify Sun RPC without charge, but are not authorized
   8  * to license or distribute it to anyone else except as part of a product or
   9  * program developed by the user.
  10  *
  11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  14  *
  15  * Sun RPC is provided with no support and without any obligation on the
  16  * part of Sun Microsystems, Inc. to assist in its use, correction,
  17  * modification or enhancement.
  18  *
  19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  21  * OR ANY PART THEREOF.
  22  *
  23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  24  * or profits or other special, indirect and consequential damages, even if
  25  * Sun has been advised of the possibility of such damages.
  26  *
  27  * Sun Microsystems, Inc.
  28  * 2550 Garcia Avenue
  29  * Mountain View, California  94043
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #if defined(LIBC_SCCS) && !defined(lint)
  34 #if 0
  35 static char *sccsid = "@(#)getrpcport.c 1.3 87/08/11 SMI";
  36 static char *sccsid = "@(#)getrpcport.c 2.1 88/07/29 4.0 RPCSRC";
  37 #else
  38 __RCSID("$NetBSD: getrpcport.c,v 1.16 2000/01/22 22:19:18 mycroft Exp $");
  39 #endif
  40 #endif
  41
  42 /*
  43  * Copyright (c) 1985 by Sun Microsystems, Inc.
  44  */
  45
  46 #include "namespace.h"
  47
  48 #include <sys/types.h>
  49 #include <sys/socket.h>
  50
  51 #include <assert.h>
  52 #include <netdb.h>
  53 #include <stdio.h>
  54 #include <string.h>
  55
  56 #include <rpc/rpc.h>
  57 #include <rpc/pmap_clnt.h>
  58
  59 #ifdef __weak_alias
  60 __weak_alias(getrpcport,_getrpcport)
  61 #endif
  62
  63 int
  64 getrpcport(host, prognum, versnum, proto)
  65         char *host;
  66         int prognum, versnum, proto;
  67 {
  68         struct sockaddr_in addr;
  69         struct hostent *hp;
  70
  71         _DIAGASSERT(host != NULL);
  72
  73         if ((hp = gethostbyname(host)) == NULL)
  74                 return (0);
  75         memset(&addr, 0, sizeof(addr));
  76         addr.sin_len = sizeof(struct sockaddr_in);
  77         addr.sin_family = AF_INET;
  78         addr.sin_port =  0;
  79         if (hp->h_length > addr.sin_len)
  80                 hp->h_length = addr.sin_len;
  81         memcpy(&addr.sin_addr.s_addr, hp->h_addr, (size_t)hp->h_length);
  82         /* Inconsistent interfaces need casts! :-( */
  83         return (pmap_getport(&addr, (u_long)prognum, (u_long)versnum,
  84             (u_int)proto));
  85 }